Thomas shaw



T. SHAW.

v Generating Carbonic Oxide.

Patented Nov. 17, 1868.

r//////////////////////// nilbN n W N.FETERS. PHOTO LTHOGRAPN UNITEDSTATES PATENT OFFICE.

THOMAS SHAW, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN GENERATING AND APPLYING CARBONIC OXIDE FOR TREATINGMETALS.

Specification forming part of Letters Patent No. 84,220, dated November17, 1868.

To all whom it may concern:

Be it known that I, THOMAS SHAW, of' the city and county ofPhiladelphia, Pennsylvania, have invented apew and improved mode ofgenerating carbonic oxide for the purpose of deoxidizing and assistingin the melting of metals; and I hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawing and to the letters of reference marked thereon.a

My invention consists in the employment of hydrocarbon fluids in themanner and for the purpose as hereinafter described.

The object of my invention is to prevent airblast from oxidizing thefluid or semi-fluid metalsby converting the oxygen into carbonic oxiderapidly, as hereinafter described.

In order to enable others to use and practice my invention, 1 willproceed to described its operation.

On reference to the accompanying drawing, which forms a part of thespecification, the sketch represents a vertical section through anordinary pot-shaped furnace, of which a is the furnace; b, the pipe forconveying the airblast; c, the pipe for conveying the carbon fluid intothe air-pipe and furnace, for the purpose as hereinafter described.

The apparatus is put in operation in this wise: The metal (iron, forinstance,) is placed alternately with layers of solid fuel in furnaceat. The fire is started in the usual manner, and blast-pipe b is tocommunicate with a blower for the purpose of furnishing air of ordinaryblast-pressure. When the metal is at a low red heat the hydrocarbonfluid is to be introduced through pipe 0 (which can communicate with atank containing the fluid) in quantities suflicient to convert theoxygen employed into carbonic oxide, which conversion is done onentering furnace at.

It will be observed that various methods can be employed for theintroducing and combining of hydrocarbon fluids with air. I therefore donot wish to confine myself to the exact method of introducing the fluid.

I do not claim broadly the use of hydrocarbon vapors and air as fuel forheating metals; but

What I do claim, and desire to secure by Letters Patent, is i Theemployment of hydrocarbon fluids for the purpose of generalin g carbonicoxide for operating on heated metals, as described.

THOMAS SHAW. [L. S.]

Witnesses ROBERT HUTOHINSON, WILLIAM MYERS.

